The dual synthetic aperture array system processes returns from the
receiving arrays. The two identical receiving arrays employing displaced
phase center antenna techniques subtract the corresponding spectrally
processed data to cancel clutter. It is further processed that a moving
target is detected and its velocity, angular position and range is
measured, in or out of the presence of clutter. There are many techniques
presented in the disclosure. These techniques are basically independent
but are related based on common set of fundamental set of mathematical
equations, understanding of radar principles and the implementations
involved. These many techniques may be employed singly and/or in
combination depending on the application and accuracy required. They are
supported by a system that includes, optimization of the number of
apertures, pulse repetition frequencies, DPCA techniques to cancel
clutter, adaptive techniques to cancel clutter, motion compensation,
weighting function for clutter and target, and controlling the system in
most optimum fashion to attain the objective of the disclosure.